Two-piece ostomy device with guiding aid for coupling

ABSTRACT

The invention relates to a two-piece ostomy device comprising a base plate for adhering to the skin surrounding a stoma and a releasable collecting bag for collecting output from said stoma. The base plate is releasably connectable to the collecting bag via a first annular flange arranged on the base plate and a second annular flange arranged on the collecting bag. An adhesive is at least partly disposed on at least one of the flanges. The ostomy device further comprises a first through-going hole extending through the first annular flange along a first axis and a second through-going hole extending through the second annular flange along a second axis, wherein the ostomy device further comprises a guiding aid for arranging the first annular flange and the second annular flange in a guiding configuration. In the guiding configuration the movement of the first and the second flange is limited relative to each other in one plane being defined by the first and the second axis and in rotation around at least one of the first or the second axis. The limited movement of the base plate and the collecting bag provides a two-piece system which is easier to apply correctly and thus reduces the risk of leakage.

TECHNICAL FIELD

The present invention relates to a two-piece ostomy device having aguiding aid for aiding a user when coupling an ostomy collecting bagwith a base plate.

BACKGROUND

Two-piece ostomy devices are ostomy products which comprise a base platethat can be adhered to the skin surrounding a stoma and an ostomycollecting bag which is replaceably attached to the base plate.

Such two-piece ostomy devices are typically used by users who desire abase plate which has a longer wear time in order to spare the skin fromfrequent changes.

The base plate and the ostomy bag are typically coupled together byeither a so-called mechanical coupling or an adhesive coupling.Mechanical couplings are often perceived as safer solutions, i.e. theyprovide a better seal and are easier to couple together. In somemechanical solutions, a so-called ‘click’ function is incorporated whichgives an audible ‘click’-sound when the two parts have been successfullycoupled together.

Adhesive couplings are usually formed of two flanges, one provided onthe base plate and the other on the ostomy bag. The flanges are adheredtogether by an adhesive disposed between the flanges. Typically, theadhesive is disposed on one of the flanges. Adhesive couplings have theadvantage of being more flexible and discreet than mechanical couplings.Therefore, adhesive couplings are usually not provided with the‘click’-functions as described above, as such a relatively advancedmechanical solution would compromise the flexibility of the adhesivecouplings.

However, there is an increased risk with traditionally adhesivecouplings for the two flanges not to be properly aligned when adheredtogether, which may compromise the seal of the coupling and therebyincrease the risk of a leakage.

Thus, there is a need for providing an aid for guiding the two partstogether in correct alignment before adhering together.

BRIEF DESCRIPTION

When describing the different parts in the following description, theterms distal and proximal will be used in order to facilitate theunderstanding of the intended orientation of the parts in respect toeach other and the user during use. Thus, the term proximal will be usedfor surfaces and sections of the respective parts that face towards theuser when the ostomy device has been properly applied around the stoma,and the term distal will be used for the surfaces and sections of therespective parts facing away from the user.

The invention relates to a two-piece ostomy device comprising a baseplate for adhering to the skin surrounding a stoma and a releasablecollecting bag for collecting output from said stoma, wherein the baseplate is releasably connectable to the collecting bag via a firstannular flange arranged on the base plate and a second annular flangearranged on the collecting bag, and where an adhesive is at least partlydisposed on at least one of the flanges, the ostomy device furthercomprises a first through-going hole extending through the first annularflange along a first axis and a second through-going hole extendingthrough the second annular flange along a second axis, wherein theostomy device further comprises a guiding aid for arranging the firstannular flange and the second annular flange in a guiding configurationwhere the movement of the first and the second flange is limitedrelative to each other in one plane being defined by the first and thesecond axis and in rotation around at least one of the first or thesecond axis.

The limited movement of the base plate and the collecting bag provides atwo-piece system which is easier to apply correctly and thus reduces therisk of leakage.

Moreover, seeing that it is possible to still rotate the base plateor/and the collecting bag around their respective axes, it is possibleto place the parts in a suitable position relative to each other andthereby provide a more comfortable ostomy device which fits theindividual curvature of the body. In some cases, this may even preventthe ostomy device from unintentionally coming lose as some positions mayresult in the body exerting a high load on the device causing it todisengage.

It should be understood that the guiding aid may be formed as a set ofparts arranged on different parts of the ostomy device, e.g. the baseplate and the collecting bag. However, the guiding aid may also be aseparate unit altogether. Examples of this will be given herein. Thus,the term guiding aid should not be interpreted limiting to only one partor piece but is also able to encompass a set of parts which togetherfunction as a guiding aid as defined by the claims.

Such a guiding aid is of particular use in two-piece ostomy deviceswherein the first annular flange is attached to the base plate via afirst annular attachment zone from which a first free outer flangesection extends in a radial direction away from the first axis and thesecond annular flange is attached to the collecting bag via a secondannular attachment zone from which a second free outer flange sectionextends in a radial direction away from the second axis, as these devicemay be difficult to align correctly as they tend to be very flexible.

In one embodiment of a two-piece ostomy device, the guiding aidcomprises a sheet with an at least partly annular cut-out having aradius equal to or larger than the radial distance from the second axisto the outer edge of the second annular attachment zone, a guiding tabextending in a radial direction away from the centre of the annularcut-out and a recess arranged on the first annular flange havingdimensions capable of receiving the guiding tab. This provides an ostomydevice which has a guiding aid that is clearly and easily identifiableby the user by touch.

During attachment of the collecting bag, the sheet may function as astabilizing layer, thereby facilitating coupling. Different materialsand dimensions may thus be chosen for the sheet, depending on thedesired stiffness, flexibility or other characteristics suitable for thesheet.

However, seeing that most users who use an adhesive two-piece ostomydevice have a desire for it to be discreet and flexible, it is desirablethat the sheet may be easily removed after the base plate and thecollecting bag have been coupled together. Thus, in one embodiment, thesheet is perforated along its axis of symmetry, which allows the sheetto be easily removed and discarded.

In order to prevent the sheet from getting stuck in the recess due to anexcess of material when the sheet is removed, the guiding tab may beprovided with a further cut-out.

In one embodiment, the recess may be defined by the first annularflange, a first and a second tab extending axially from the firstannular flange and a bridge part connecting the ends of the first andsecond tab.

In another embodiment of the two-piece ostomy device, the guiding aidcomprises a sheet formed with a first and a second at least partlyannular cut-out, wherein the first cut-out has a radius equal to orlarger than the radial distance from the first axis to the outer edge ofthe first annular attachment zone, and the second cut-out has a radiusequal to or larger than the radial distance from the second axis to theouter edge of the first annular attachment zone. This provides an easyto handle guiding aid, which may be easily discarded. Furthermore, suchguiding aid may easily be introduced to the current production oftwo-piece adhesive ostomy devices as it does not necessitate anyalterations to the base plate or collecting bag of many known devices.

Advantageously, the two-piece ostomy device may be formed so that thedistance between the centre of the first cut-out and the second cut-outis equal to or larger than the radial distance from the first axis tothe outer edge of the first flange and the radial distance from thesecond axis to the outer edge of the second flange. This prevents thefirst and the second annular flange from being unintentionally bent andthe guiding aid from unintentionally falling off.

As described previously above, the sheet may be provided with aperforation line dividing the sheet along a line through the centre ofthe first cut-out and the centre of the second cut-out, so that thesheet is easily removed.

At least two handling tabs may be protruding from the sheet on oppositesides of the perforation line. This provides handling areas so that theuser can easily grab a hold off and manipulate the sheet.

The second cut-out may be fully annularly arranged in the sheet. Thisallows for the sheet to be arranged on the collecting bag duringmanufacturing in such a way that it is difficult to pull off withouttearing the sheet or the collecting bag.

In yet another embodiment of the two-piece ostomy device, the guidingaid comprises a receiving slot arranged on the base plate or the ostomybag facing the same direction as the respective annular flange, whereinthe slot extends in a radial direction from the respective first orsecond axis and has a radial curvature corresponding to that of theopposing annular flange.

After use of the guiding aid, the receiving slot is no longer needed.Thus, the receiving slot may be detachably arranged on the ostomy bag,so that it may be discarded after use in order to prevent it fromirritating the skin or getting caught in e.g. clothing or the like.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the components of a first embodiment of the two-pieceostomy device,

FIG. 2-6 a shows the application of the first embodiment of a two-pieceostomy device,

FIG. 7 shows the components of a second embodiment of a two-piece ostomydevice,

FIG. 8-14 shows the application of the second embodiment of a two-pieceostomy device,

FIG. 15 shows the components of a third embodiment of a two-piece ostomydevice, and

FIG. 16-20 shows the application of the third embodiment of a two-pieceostomy device.

DETAILED DESCRIPTION

The different elements of a first embodiment of an ostomy device 1 areshown in FIG. 1.

The ostomy device is formed of a base plate 2, a collecting bag 3 and aguide ring 4.

The basic construction of the base plate and the collecting bag issimilar to that of known base plates and collecting bags for use inadhesive two-piece ostomy devices, such as the base plates andcollecting bags for use in the Easiflex product line which is marketedby Coloplast A/S. In the following description, such known parts willform the basis for illustrating and describing the differentembodiments. Thus, for the known and similar parts like referencenumbers will be used for the different embodiments in order tofacilitate reading and understanding.

The base plate is adapted to be attached to the skin around a stoma andis capable of coupling with the collecting bag so that output from thestoma is received in the bag. The base plate comprises a skin friendlyadhesive layer 5, which has been disposed on the proximal side of abacking layer 6. A first through-going hole 7 is provided in theadhesive layer and the backing layer. On the distal side of the backinglayer, a first annular flange 8 is attached to the backing layer along afirst annular weld 9 extending around the through-going hole 7.

The adhesive layer 5, the first through-going hole 7 and the firstannular flange 8 are arranged coaxially along a central axis of the baseplate.

The adhesive layer 5 provides an adhesive proximal surface suitable foradhering to the skin. The backing layer 6 is particularly advantageousduring production as it serves as a guide layer for aligning theadhesive correctly and as a welding base for welding the first annularflange 8 thereto. Moreover, the backing layer serves as a protectivecover during use so that the adhesive only adheres to the skin and notto unwanted articles such as clothes or the collecting bag.

The collecting bag 3 is formed of a first and a second foil sheet 10,11, which at their periphery are welded together along the weld 12.

A second through-going hole 13 is provided in the first foil sheet 10and a second annular flange 14 is attached to the proximal side of thefirst foil sheet along a second annular weld 15 extending around thesecond through-going hole 13.

On the proximal surface of the second annular flange 14, a secondadhesive layer 40 is disposed, which is suitable for providing anadhesive connection between the first annular flange 8 and the secondannular flange 14, thereby providing an adhesive coupling between thebase plate and the collecting bag. During storage, the second adhesivelayer is covered by a release liner 41. The release liner is removedprior to use of the collecting bag, thereby exposing the second adhesivelayer.

The second through-going hole 13 and the annular flange 14 are arrangedcoaxially along a central axis of the collecting bag.

The base plate and collecting bag as described above are very similar toparts used in adhesive two-piece ostomy devices, such as the Easiflexproduct line mentioned previously.

The illustrated base plate construction mainly differs from knownadhesive base plates in that, at the periphery of the first annularflange 8, a guide slot 30 is provided which extends in an axialdirection from the first annular flange. The guide slot is defined bythe distal surface of the annular flange 8, a first and second spacer31, 32 extending axially from the distal surface of the annular flange 8and being placed along the periphery of the first annular flange and abridging element 33 connecting the first and the second spacer.

The guide ring 4 is formed as an annular ring 16 defined by an innercircumference 16′ and an outer circumference 16″. The guide ring furtherhas a first tab 17 extending in a radial direction from the annular ringand a second tab 18 extending opposite the first tab in a directionradially away from the annular ring.

A first tear line 19 extending in a radial direction from the centre ofthe annular ring is provided in the first tab 17, dividing the first tab17 into symmetrical halves.

A second tear line 20 extending in a radial direction from the centre ofthe annular ring is provided in the second tab 18, dividing the secondtab 18 into symmetrical halves.

The second tab is provided with a recess 21 arranged as a cut-outextending radially inwards from the second tab 18.

The inner circumference 16′ of the annular ring 16 is slightly largerthan the outer circumference 15″ of the second annular weld 15. Thisenables the guide ring 4 to be rotatably arranged on the collecting bag3 along the central axis of the collecting bag. This prevents the guidering 4 from falling off as it may be arranged so that it is retained bythe groove 25 defined by the outer circumference 15″ of the secondannular weld, the proximal surface of the first foil sheet 10 and thedistal surface of the second annular flange 14.

The guide ring 4 may be formed of any suitable sheet material having adesired stiffness. Such materials could be a thermoformed hard polymerfoil, punched coated cardboard, thermoformed composite materials orinjection moulded polymers.

In the following, it will be described how the first embodiment of theostomy device is used, with reference to FIGS. 2-7.

First the guide ring is rotated as shown by the arrow in FIG. 2 so thatthe second tab 18 is in a suitable position, as will be explained below.

Then, as illustrated in FIG. 3, the second tab is arranged in the guideslot 30 of the base plate 2 which is arranged on the skin surroundingthe stoma so that the stoma extends through the first through-going hole7. Seeing that the tab has previously been rotated to a suitableposition, the collecting bag will align with the base plate in a desiredposition relative to the base plate and the stoma.

As shown in FIG. 4, the base plate and the ostomy collecting bag are nowarranged in a suitable position relative to each other. As can beunderstood, the relative movement of the central axis of the base platein respect to the central axis of the collecting bag is now limited toone plane defined by the two axes.

However, due to the rotatable relationship between the guide ring andthe collecting bag, the collecting bag may still be rotated around itscentral axis. This allows the user to make any final adjustments beforeremoving the release liner and coupling the first and second flangestogether via the second adhesive layer.

Finally, the guide ring 4 is removed by pulling on opposite sides of thetear line on the first tab, as shown in FIG. 5. This tears the guidering, which may subsequently be discarded. As seen in FIGS. 6 and 6 a,the recess in the second tab allows the guide ring to be removed fromthe slot.

The different elements of a second embodiment of an ostomy device 100are shown in FIG. 7. The ostomy device 100 is formed of a base plate 2and a collection bag 3. The base plate and the collection bag aresimilar to that of a typical adhesive two-piece ostomy device, such asthe Easiflex two-piece ostomy device produced by Coloplast NS. Suchsimilar devices have been described above in respect to the firstembodiment of an ostomy device, thus, in order to facilitate thereading, similar parts have been given the same reference numerals. Inaddition thereto, the ostomy device furthermore comprises a guiding aid104.

The guiding aid is formed as a wrench-like assembly, where a first and asecond annular cut-out 105, 106 is provided on a sheet 107. The cut-outsare spaced apart by a spacing section 108 of the sheet 107.

A first tear-line 109 is provided in the spacing section 108 and asecond tear line 110 is provided in the sheet 107 at the second annularcut-out opposite the first tear-line. The first and the second tear-lineis provided along an axis of symmetry iii-iii of the guiding aid 104.

The first cut-out 105 has a first inner circumference 105′ slightlylarger than the outer circumference 9″ of the first annular weld 9.Furthermore, the sheet 107 does not extend around the entire firstcut-out but is interrupted by an opening 111.

The second cut-out 106 has a second inner circumference 106′ slightlylarger than the outer circumference 15″ of the second annular weld 15.This enables the guiding aid to be rotatably arranged on the collectingbag 3 around the central axis of the collecting bag. This prevents theguiding aid 104 from falling off as it may be arranged so that it isretained in the groove 25 defined by the outer circumference 15″ of thesecond annular weld, the proximal surface of the first foil sheet 10 andthe distal surface of the second annular flange 14, as shown in FIG. 8.The guiding aid 104 may advantageously be arranged on the collecting bag3 during the manufacturing of the collecting bag 3.

The guiding aid 104 may be formed of any suitable sheet material havinga desired stiffness. Such materials could be a thermoformed hard polymerfoil, punched coated cardboard, thermoformed composite materials orinjection moulded polymers.

In the following, it will be described how the second embodiment of theostomy device is used, with reference to FIGS. 9-14.

As seen in FIG. 9, the opening 111 allows the user to arrange the firstcut-out around the first annular weld. This coupling of the base plate 2and the collecting bag 3 via the guiding aid 104 provides a limitedrelative movement of the base plate 2 and the collecting bag 3. As canbe understood the movement of the central axis of the base plate and thecentral axis of the ostomy bag is limited to be within one plane definedby the two axes. However, the guiding aid allows both the base plate andthe collecting bag to be rotated around their respective axes allowingthe user to arrange the two parts in a suitable position.

When the base plate and the collecting bag has been arranged in asuitable position, the user removes the release liner as shown in FIG.10 and folds the ostomy bag towards the base plate as shown in FIG. 11so that the first annular flange and the second annular flange adheretogether. Now the collecting bag is properly coupled to the base plateand the ostomy device is ready for use, as shown in FIG. 12.

However, should the user so desire, the guiding aid 104 may be removedby tearing along the first and the second tear line 109, 110, asillustrated in FIGS. 13 and 14.

A folding line 115 may be formed across the spacing section 108. Thefolding line is arranged so that when the guiding aid 104 is foldedaround the folding line, the central axis of the base plate and thecentral axis of the collecting bag are co-axially aligned. Such afolding line may be pre-formed, e.g. by bending it during manufacturing,or a visual indicator, such as a printed line, may show where to fold inorder to obtain correct alignment.

The different elements of a third embodiment of an ostomy device 200 areshown in FIG. 15. The ostomy device 200 is formed of a base plate 2 anda collection bag 3. The base plate and the collection bag are similar tothose of a typical adhesive two-piece ostomy device, such as theEasiflex two-piece ostomy device produced by Coloplast A/S. Such similardevices have been described above in respect to the first and the secondembodiment of an ostomy device, thus, in order to facilitate thereading, similar parts have been given the same reference numerals.

In addition thereto, the ostomy device further comprises a guiding tab204. The guiding tab 204 is arranged on the proximal side of thecollecting bag. A receiving slot 205 is formed in the guiding tab 204.The slot is formed and shaped so as to receive a section of the edge ofthe first annular flange 8., i.e., seen in a radial direction from thecentre axis of the collecting bag, the slot begins at a distance lessthan the radial extent of the first annular flange and the slot extendsin a radial direction away from the central axis of the collecting bagat a distance slightly larger than the radial extent of the firstannular flange. The slot further has a thickness, i.e. an axial extentalong the central axis of the collecting bag, slightly larger than thethickness of the first annular flange. The slot ends in a curved shapecorresponding to the curvature of the first annular flange.

The guiding tab 204 is releasably attached to the collecting bag. Thismay for example be done with a velcro coupling or a snap lock. Thus,after the guiding tab has been used it may be discarded.

In the following, it will be described how the third embodiment of theostomy device is used, with reference to FIGS. 16-20.

First, the release liner is removed from the second annular flange onthe collecting bag as shown in FIG. 16. Then, the guiding tab is alignedwith the first annular flange, as seen in FIG. 17. After this, theguiding tab and the first annular flange are coupled together, i.e. thefirst annular flange is received in the slot, as shown in FIG. 18. Inthis position, the central axis of the base plate and the central axisof the collecting bag are relatively fixed in relation to each other sothat the axes are only movable in one plane defined by them. However,the guide tab is able to slide along the edge of the first annularflange, thus enabling rotation of the collecting bag around the centralaxis thereof. This allows the user to rotate the collecting bag into asuitable position before adhering the first and the second annularflange together, as seen in FIG. 19.

Alternatively the removal of the release liner, as shown in FIG. 16, maybe delayed until the guide tab has coupled with the first annularflange, as shown in FIG. 18.

Finally, the guide tab may be removed as shown in FIG. 20. Thus, theguide tab will not be present during use where it could be in the way,for example by rubbing against the skin causing itching or cuts orgetting caught in clothing.

Although not shown, the edge of the first annular flange may be providedwith a rim having an increased thickness larger than the adjacent flangematerial. The receiving slot may be provided with a similarcomplementary groove. This provides a ‘click’-coupling where engagementis improved but the rotating relation between the collecting bag and thebase plate is maintained.

With respect to the embodiments above, some dimensions have beenreferred to as being slightly larger than other dimensions. Such aslightly larger dimension is of course relative and is modified based onthe desired fit. Thus, if a tight fit is desired, the slightly largerdimension should be almost equal to the other dimension. However, if amore loose fit is desired, may be due to production tolerances, or sincesome users may be disabled and require larger dimensions to operate theostomy device correctly, the slightly larger dimension will result in alarger gap to the other dimension. The person skilled in the art wouldbe capable of taking such dimensioning into consideration and he willhave no problem understanding what is meant by such slightly largerdimension.

EMBODIMENTS

1. A two-piece ostomy device, comprising a base plate for adhering tothe skin surrounding a stoma, and a releasable collecting bag forcollecting output from said stoma, wherein the base plate is releasablyconnectable to the collecting bag via a first annular flange arranged onthe base plate and a second annular flange arranged on the collectingbag and where an adhesive is at least partly disposed on at least one ofthe flanges, the ostomy device further comprising

-   -   a first through-going hole extending through the first annular        flange along a first axis, and    -   a second through-going hole extending through the second annular        flange along a second axis,        wherein the ostomy device further comprises a guiding aid for        arranging the first annular flange and the second annular flange        in a guiding configuration where the movement of the first and        the second flange is limited relative to each other    -   in one plane being defined by the first and second axis, and    -   in rotation around at least one of the first or the second axis.

2. A two-piece ostomy device according to embodiment 1, wherein thefirst annular flange is attached to the base plate via a first annularattachment zone from which a first free outer flange section extends ina radial direction away from the first axis, and the second annularflange is attached to the collecting bag via a second annular attachmentzone from which a second free outer flange section extends in a radialdirection away from the second axis.

3. A two-piece ostomy device according to embodiment 2, wherein theguiding aid comprises

-   -   a sheet with an at least partly annular cut-out having a radius        equal to or larger than the radial distance from the second axis        to the outer edge of the second annular attachment zone, said        sheet having a guiding tab extending in a radial direction away        from the centre of the annular cut-out, and    -   a recess arranged on the first annular flange having dimensions        capable of receiving the guiding tab.

4. A two-piece ostomy device according to embodiment 3, wherein thesheet is perforated along its axis of symmetry.

5. A two-piece ostomy device according to embodiment 3 or 4, wherein theguiding tab is provided with a further cut-out.

6. A two-piece ostomy device according to embodiment 3, 4 or 5, whereinthe recess is defined by the first annular flange, a first and a secondtab extending axially from the first annular flange and a bridge partconnecting the ends of the first and second tab.

7. A two-piece ostomy device according to embodiment 2, wherein theguiding aid comprises a sheet formed with a first and a second at leastpartly annular cut-out, wherein the first cut-out has a radius equal toor larger than the radial distance from the first axis to the outer edgeof the first annular attachment zone, and the second cut-out has aradius equal to or larger than the radial distance from the second axisto the outer edge of the first annular attachment zone.

8. A two-piece ostomy device according to embodiment 7, wherein thedistance between the centre of the first cut-out and the second cut-outis equal to or larger than the radial distance from the first axis tothe outer edge of the first flange and the radial distance from thesecond axis to the outer edge of the second flange.

9. A two-piece ostomy device according to embodiment 7 or 8, wherein thesheet is provided with a perforation line dividing the sheet along aline through the centre of the first cut-out and the centre of thesecond cut-out.

10. A two-piece ostomy device according to embodiment 7, 8 or 9, whereinat least two handling tabs protrude from the sheet on opposite sides ofthe perforation line.

11. A two-piece ostomy device according to embodiment 7, 8, 9 or 10,wherein the second cut-out is fully annularly arranged in the sheet.

REFERENCE NUMBERS

-   1. first embodiment of an ostomy device-   2. base plate-   3. collecting bag-   4. guide ring-   5. skin friendly adhesive layer-   6. proximal side of a backing layer-   7. first through-going hole-   8. first annular flange-   9. first annular weld-   10. first foil sheet-   11. second foil sheet-   12. weld-   13. second through-going hole-   14. second annular flange-   15. second annular weld-   16. annular ring-   17. first tab-   18. second tab-   19. first tear line-   20. second tear line-   21. recess-   25. groove-   30. guide slot-   31. first spacer-   32. second spacer-   33. bridging element-   40. second adhesive layer-   41. release liner-   100. second embodiment of an ostomy device-   104. guiding aid-   105. first annular cut-out-   106. second annular cut-out-   107. sheet-   108. spacing section-   109. first tear-line-   110. second tear line-   111. opening-   200. third embodiment of an ostomy device-   204. guiding tab-   205. receiving slot

The invention claimed is:
 1. A two-piece ostomy device, comprising abase plate for adhering to the skin surrounding a stoma and a releasablecollecting bag for collecting output from said stoma, wherein the baseplate is releasably connectable to the collecting bag via a firstannular flange arranged on the base plate and a second annular flangearranged on the collecting bag and where an adhesive is disposed on atleast one of the flanges, the ostomy device further comprising: a firstthrough-going hole extending through the first annular flange along afirst axis, and a second through-going hole extending through the secondannular flange along a second axis, where the first annular flange isattached to the base plate via a first annular attachment zone fromwhich a first free outer flange section extends in a radial directionaway from the first axis, and the second annular flange is attached tothe collecting bag via a second annular attachment zone from which asecond free outer flange section extends in a radial direction away fromthe second axis, and where the ostomy device further comprises: aguiding aid for arranging the first annular flange and the secondannular flange in a guiding configuration where the movement of thefirst and the second flange is limited relative to each other in oneplane being defined by the first and second axis, and in rotation aroundat least one of the first or the second axis, wherein the guiding aidcomprises a receiving slot arranged on one of the first annular flangeof the base plate and the second annular flange of the collecting bagand facing in a same direction as a respective one of the first andsecond annular flange, wherein the receiving slot extends in a radialdirection from the respective first or second axis and is detachablyarranged on the ostomy bag.
 2. A two-piece ostomy device according toclaim 1, wherein the receiving slot has a radial curvature correspondingto that of the opposing annular flange.